<!--
 * @Description: In User Settings Edit!
 * @Author: your name
 * @Date: 2019-08-26 17:51:38
 * @LastEditTime: 2019-08-26 20:58:42
 * @LastEditors: Please set LastEditors
 -->
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <link rel="shortcut icon" href="./favicon.ico">
    <script src="js/ajax.js"></script>
    <script src="js/index.js"></script>
</head>

<body>
<input type="button" id="btn" value="加">
<input type="button" id="btn2" value="删">
<input type="button" id="btn3" value="改">
</body>

</html>